TW201735882A - Absorbent article - Google Patents

Abstract

An absorbent article (10) includes: an absorbing body (30); a first skin-side sheet (40) made of non-woven fabric; and a second skin-side sheet (50) disposed between the absorbing body and the first skin-side sheet, and has a first direction (L) extending along the orientation of fiber in the first skin-side sheet and a second direction (W) perpendicular to the first direction. The first skin-side sheet has a region having a formation index of 180 to 557. The second skin-side sheet has long colored sections (55) extending in the first direction and formed of a plurality of dots. The colored sections can be viewed from the skin facing side of the absorbent article through the aforementioned region in the first skin-side sheet. The length of the colored sections in the first direction is 0.5 mm to 1.85 mm. The length of the colored sections in the second direction is 0.1 mm to 0.7 mm. The distance between adjacent colored sections in the first direction is 0.5 mm to 10 mm. The distance between adjacent colored sections in the second direction is 0.75 mm to 3.5 mm.

Description

Absorbent article

The present invention relates to absorbent articles such as disposable disposable diapers, anti-overflow breast pads, and sanitary napkins.

An absorbent article is known which has a coloring portion recognizable from a skin facing side of an absorbent article through a liquid permeable sheet called a top sheet. Patent Document 1 discloses, as such an absorbent article, an absorbent article provided with a coloring portion having at least two regions of different hues, which are configured to be manufactured by a top sheet or a top sheet. A feeling of deep relationship. By creating a feeling of depth, the function or action of inhaling the secretion into the interior of the absorbent article can be visually displayed, giving the user a sense of security before and after use.

[Previous Technical Literature] [Patent Document]

Patent Document 1: Japanese Patent Publication No. 2005-512682

However, the absorbent article described in Patent Document 1 is intended to visually display the function of the absorbent material that cannot be recognized from the outside by creating a feeling of depth, and is not intended to give the absorbent article The impression of high absorption performance.

An object of the present invention is to provide an impression that a absorbent article has high absorption performance to a user by giving an impression that the absorbent article does not actually exist to the user.

The present invention is embodied in an embodiment by an absorbent article.

An absorbent article according to one aspect of the present invention includes an absorbent body, a first skin surface sheet which is disposed on the skin facing surface side of the absorbent body and which is formed of a non-woven fabric, and is disposed between the absorbent body and the first skin surface sheet. 2 The skin surface sheet has a first direction that is aligned along the fibers in the first skin surface sheet and a second direction that is orthogonal to the first direction. The first skin surface sheet has a region having a texture index in the range of 180 to 557, and the second skin sheet has a long colored portion composed of a plurality of dots in the first direction, and the colored portion passes through the region of the first skin sheet and The skin of the absorbent article is recognizable on the side of the skin, and the length of the colored portion in the first direction is 0.5 mm or more and 1.85 mm or less, and the length of the colored portion in the second direction is 0.1 mm or more and 0.7 mm or less. The distance between the colored portions adjacent to each other in the first direction is 0.5 mm or more and 10 mm or less, and the interval between the colored portions adjacent to the second direction is 0.75 mm or more and 3.5 mm or less.

According to the present invention, the absorbent article can be practically not present The impression of the existing holes is given to the user, and the impression that the absorbent article has high absorption properties is imparted to the user.

10‧‧‧Disposable disposable diapers (absorbent articles)

20‧‧‧ Subject

30‧‧‧Acceptor

35‧‧‧Lower cover sheet

40‧‧‧Top sheet (first skin sheet)

40A‧‧‧High absorbance area

40B‧‧‧Low absorbance area

50‧‧‧Upper cover sheet (second skin sheet)

55‧‧‧ points (coloring department)

55A‧‧‧ points

60‧‧‧Flanking

L‧‧‧1st direction

W‧‧‧2nd direction

Length of A‧‧ points

B‧‧ ‧ width

Interval of points in the first direction of G1‧‧

Interval of points in the second direction of G2‧‧

100‧‧‧ Anti-overflow breast pad (absorbent articles)

130‧‧‧ absorber

140‧‧‧Non-woven (first skin noodle)

151‧‧‧Upper cover sheet (second skin sheet)

152‧‧‧The lower cover sheet (the second skin sheet)

Fig. 1 is a plan view showing a disposable disposable diaper for an absorbent article according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view taken along the line A-A of the disposable diaper of the same embodiment.

Fig. 3 is an enlarged plan view showing a state in which the skin of the disposable diaper of the disposable embodiment is viewed from the opposite side of the skin.

Fig. 4 is an enlarged plan view showing a second skin sheet of the disposable diaper which is provided in the same embodiment.

Fig. 5 is an explanatory view showing an effect obtained by the same embodiment.

Fig. 6 is a schematic view showing a modified example of the arrangement of the colored portions of the disposable diaper after the same embodiment.

Fig. 7 is a schematic schematic view showing a modified example of the configuration of the colored portion.

Fig. 8 is a plan view showing a breast milk pad which is an absorbent article according to another embodiment of the present invention.

Fig. 9 is a cross-sectional view taken along line B-B of the anti-overflow breast pad of the embodiment.

Embodiments of the present invention will be described below with reference to the drawings.

An absorbent article according to an embodiment of the present invention includes: The first skin surface sheet which is disposed on the skin facing surface side of the absorbent body and which is made of non-woven fabric, and the second skin surface sheet which is disposed between the absorbent body and the first skin surface sheet, and has the following: The first direction of the fiber alignment in the skin surface sheet and the second direction orthogonal to the first direction. The first skin surface sheet has a region having a texture index in the range of 180 to 557, and the second skin sheet has a long colored portion composed of a plurality of dots in the first direction, and the colored portion passes through the region of the first skin sheet and The skin of the absorbent article is recognizable on the side of the skin, and the length of the colored portion in the first direction is 0.5 mm or more and 1.85 mm or less, and the length of the colored portion in the second direction is 0.1 mm or more and 0.7 mm or less. The distance between the colored portions adjacent to each other in the first direction is 0.5 mm or more and 10 mm or less, and the interval between the colored portions adjacent to the second direction is 0.75 mm or more and 3.5 mm or less.

In this way, the first skin surface sheet is made of a non-woven fabric, and the texture index of the first skin surface sheet is set to be in the range of 180 to 557, and an appropriate mass is imparted to the texture of the first skin surface sheet to improve the absorbability. The skin on the facing side of the article is shaded by the point visible on the first skin sheet. Further, the length of the colored portion in the first direction is 0.5 mm or more and 1.85 mm or less, and the length of the colored portion in the second direction is 0.1 mm or more and 0.7 mm or less, and the interval between the colored portions adjacent to the first direction is 0.5 mm. In the case of 10 mm or less, the distance between the colored portions adjacent to the second direction is 0.75 mm or more and 3.5 mm or less, so that the colored portion can be given a hole-like impression. In addition, the faint image that produces the point is the shadow-like illusion of the hole, and the point is not only produced as a pattern or a color, but is produced It looks like a holey impression. In the shape in which the dots are oriented in the direction (the first direction) along which the fibers in the first skin sheet are aligned, the dots appear as shadows of the fibers, and the second skin sheet is shaded. So it can improve the effect of the point that looks like a hole. According to this, the impression that the absorbent article has a hole that does not actually exist is given to the user, and the user can be given an impression that the absorbent article has high absorption performance.

The above region of the first skin surface sheet preferably has an average absorbance in the range of 275 to 1694.

Thereby, the visibility of the skin facing surface side of a plurality of points constituting the coloring portion of the second skin surface sheet is ensured.

Preferably, the colored portion includes a plurality of dot rows arranged in the first direction, and the dot rows are arranged apart from each other in the second direction.

In this way, the direction in which the dot row extends is aligned with the direction (first direction) along which the fibers in the first skin sheet are aligned, and the first skin surface is favorably formed over a plurality of points in the constituent rows. The shadow portion of the fiber of the sheet enhances the effect that the spot appears to be a hole, and further enhances the impression that the absorbent article has a hole.

Preferably, the colored portion is arranged such that points adjacent to each other in the second direction are shifted from each other in the first direction between the plurality of dot rows.

In this way, the dots are arranged in a zigzag shape between the plurality of dot rows, so that the holes can be displayed in a distributed manner, and the impression that the holes are present in the absorbent article can be further improved.

Preferably, the colored portion has a constant interval between points adjacent to the second direction, and preferably ranges from 0.75 to 3.5 mm.

According to this, the dots are moderately dense, and the frequency of occurrence of all the identification points in the above-described regions of the first skin surface sheet can be appropriately ensured. Therefore, in the region where the absorbance is high, the first skin surface sheet can be made to appear, and the first skin surface sheet can be appropriately maintained at the interval between the colored portion and the non-colored portion other than the colored portion, and the absorbent article can be further improved. There is an impression of the hole.

Preferably, the colored portion has a smaller dimension of the dots along the second direction than the interval between adjacent dots.

According to this, the width of the dot-non-colored portion is narrowed, and the impression of the depth of the hole generated by the dot is emphasized, so that the impression of the hole in the absorbent article can be further improved.

Preferably, the colored portion has a size of A in the first direction and a size of B in the second direction, and the ratio A/B is in the range of 1 to 18.5.

In this manner, the point A/B of the size A and B of the dots is set in the range of 1 to 18.5, and the dots are moderately aligned with respect to the direction (first direction) along the fibers in the first skin sheet. Set to a long shape that makes it look like a hole but is the right size.

Hereinafter, it will be specifically described with reference to the drawings.

Fig. 1 is a schematic plan view showing the overall configuration of a disposable disposable diaper 10, which is an absorbent article according to the present embodiment. Fig. 1 shows the disposable disposable diaper 10 in an unfolded state before the body is installed. The disposable disposable diaper 10 is not limited to the patch type, and the pants type may be used.

The disposable disposable diaper 10 of the present embodiment has a front waist region Sf disposed in front of the waistline of the wearer, a back waist region Sb disposed on the back of the waist, and a front waist region Sf and a back waist region Sb. The crotch region Sc disposed between the wearer's crotch portion is substantially composed of the main body 20, the absorbent body 30, the first skin surface sheet 40, and the second skin surface sheet 50. Here, the direction in which the crotch region Sc extends between the front waist region Sf and the back waist region Sb is the first direction L, and is parallel to the surface of the first skin surface sheet 40 and orthogonal to the first direction L. The direction is set to the second direction W.

The main body 20 is formed into an outer shape of the disposable disposable diaper 10, and constitutes a disposable diaper main body for fixing the absorbent body 30 to the wearer's body.

The main body 20 (specifically, the back non-woven fabric 21 to be described later) has a pair of side flaps 60 extending outward in the second direction W in the rear waist region Sb. A fastening tape 105 is attached to the side flaps 60. The hook sheet 110 is attached to the fastening tape 105 so that the hook sheet 110 is engaged with the target tape 120 provided in the front waist region Sf, and the disposable disposable diaper 10 can be maintained in the installed state.

The absorbent body (in the outline of FIG. 1 , only the outline is shown by a thick dotted line) 30 is formed into a vertically long rectangular shape, and is disposed on the skin facing surface of the main body 20 in a state in which the longitudinal direction thereof coincides with the first direction L. on. The material used for the absorber 30 is not particularly limited, and known members and materials such as hydrophilic fibers and absorbent polymers can be suitably used.

The first skin surface sheet (hereinafter referred to as "top sheet") The 40-series is disposed on the skin facing surface side of the absorbent body 30, and forms the inner surface of the disposable disposable diaper 10 which is in direct contact with the wearer's skin. In the present embodiment, the top sheet 40 is composed of a liquid-permeable white nonwoven fabric, and specifically, is composed of a hot air non-woven fabric having an average absorbance and a texture index in a predetermined range.

The second skin surface sheet 50 specifically realizes the coloring portion 55 of the present embodiment. In the present embodiment, the second skin surface sheet 50 is realized as an upper covering sheet having liquid absorbing properties, and is disposed between the absorbent body 30 and the top sheet 40, in other words, on the skin facing surface side of the absorbent body 30, and is disposed on the top sheet. 40 non-skin opposite side. The upper cover sheet 50 is made of a tissue material provided with a colored portion 55 by printing, and has an outer shape substantially conforming to the absorber 30 in the plan view of FIG. The upper covering sheet 50 is a member generally referred to as a core cladding together with a lower covering sheet 35 which will be described later.

In addition to the above, the disposable disposable diaper 10 further includes a first elastic body 70 and a second elastic body 80 which are erected toward the outside of the second direction W of the absorbent body 30. On the three-dimensional side, the second elastic body 80 is attached to the leg circumference of the wearer, and the main body 20 is provided with stretchability in the first direction L. The first elastic body 70 extends from the front waist region Sf to the rear waist region Sb on the outer side of the absorber 30, and expands and contracts in the first direction L. The second elastic body 80 extends over the entire side of the crotch region Sc in the side edge portion of the main body 20 corresponding to the leg circumference of the wearer, and expands and contracts in the first direction L. By omitting the urinary position in the second direction W by the three-dimensional side formed by the first elastic body 70, it is possible to suppress Leakage of excrement from the urination position toward the outside of the second direction W. Further, the second elastic body 80 is provided with the stretchability at the side edge portion of the main body 20, so that the disposable diaper 10 can be improved in the leg circumference.

Fig. 2 is a cross-sectional view taken along line A-A of the disposable disposable diaper 10 shown in Fig. 1.

The main body 20 is formed by laminating a plurality of sheet members. Specifically, the main body 20 is formed on the outermost surface of the disposable disposable diaper 10, and is provided by the back non-woven fabric 21 that abuts on the wearer's clothes, and the absorbent body 30 and the back non-woven fabric 21. The back film 22 is formed, and the back nonwoven fabric 21 and the back film 22 are joined by an adhesive (for example, a hot melt adhesive). The back non-woven fabric 21 is hydrophobic, and the back film 22 is liquid-impermeable.

The absorber 30 is in a state of being covered by the upper cover sheet 50 and the liquid-absorbent lower cover sheet 35, and the lower cover sheet 35 is configured as a sheet member different from the upper cover sheet 50. In the present embodiment, the lower cover sheet 35 is made of a tissue material, and the absorber 30 is covered by the lower cover sheet 35 on the bottom surface of the non-skin opposing surface and the two side edges extending in the first direction L. Here, an opening that is not covered by the lower covering sheet 35 is formed on both sides of the skin facing surface side and the first direction L of the absorber 30, and the upper covering sheet 50 is placed to block the opening, and the upper covering sheet is covered by the upper covering sheet 50. The lower cover sheet 50 and the lower cover sheet 35 cover the entire absorbent body 30.

The top sheet 40 covers the entire upper covering sheet 50 on the skin facing side of the absorbent body 30, and the upper covering sheet 50 is covered. The side edge portion extends beyond the outer side in the second direction W. In the present embodiment, the side sheet 25 is provided on the outer side of the top sheet 40 in the second direction W, and the side sheet 25 has its inner edge portion folded outward and overlaps the side edge portion of the top sheet 40 at the side portion. The first elastic body 70 forming the three-dimensional side is sandwiched between the folded portions of the sheet 25. In the back waist region Sb, the side sheet 25 extends toward the outside of the second direction W along the back nonwoven fabric 21 of the main body 20, and joins the back nonwoven fabric 21 to form the side flaps 60.

The second elastic body 80 is held between the back film 22 and the side sheets 25. Further, the second elastic body 80 may be held between the back nonwoven fabric 21 and the back film 22. Fig. 3 is an enlarged plan view showing a state in which the skin of the disposable disposable diaper 10 is viewed from the opposite side of the skin. 4 is an enlarged plan view of the upper covering sheet 50, and the colored portion 55 provided on the upper covering sheet 50 is enlarged and displayed.

The upper cover sheet 50 is provided with a colored portion 55 by printing on the skin facing surface. The printing method of the colored portion 55 may be a method using ink using flexographic printing, gravure printing, lithography, or optional printing, or a pressure sensitive ink or a colored hot melt adhesive. Here, since the gap between the fibers of the tissue material used for the upper cover sheet 50 is narrower than that of the non-woven fabric, the ink tends to remain on the surface of the material during printing, and a clear and uniform printing portion can be formed as a whole, and specifically, no printing is performed. Agglomeration. However, the material used as the upper covering sheet 50 does not exclude the use of the non-woven fabric.

Referring to Fig. 4, the coloring portion 55 of the upper cover sheet 50 is composed of a plurality of long dots in the first direction L. Here, the "point" is not limited to a circle or an ellipse, and includes a dotted line (dotted line), a little chain line, or two points. The concept of a "section" in which a line such as a chain line forms a straight line is explained. Point 55 shown in Fig. 4 is a dotted line section.

In FIG. 4, the dot 55 constitutes a dot row 55A composed of a plurality of dots arranged in the first direction L at a predetermined interval, and the dot row 55A is arranged to be spaced apart from each other in the second direction W. The size of the dot 55 is preferably in the range of 0.5 mm to 1.85 mm in the first direction L, and the width B in the second direction W is preferably in the range of 0.1 mm to 0.7 mm. From the viewpoint of giving the user an impression, the length A of the dot 55 is preferably in the range of 0.5 mm to 1.5 mm. Further, the distance G1 between the points 55 adjacent to the first direction L is preferably in the range of 0.5 mm to 10 mm, and the interval G2 between the points 55 adjacent to the second direction W is preferably in the range of 0.75 mm to 3.5 mm. . The distance between the points 55 and G1 and G2 is preferably in the range of 0.5 mm to 4 mm and 0.75 mm to 2.5 mm, respectively. In the present embodiment, the length 55 of the dot 55 is the width B or more (B≦A), and the ratio A/B of the length A to the width B is in the range of 1 to 18.5, preferably in the range of 1 to 10. Further, the width B of the dot 55 is smaller than the interval G2 between the dot rows 55A adjacent to the second direction W.

In the present embodiment, between the plurality of dot rows 55A, the dots 55 adjacent to the second direction W are deviated from each other in the first direction L, and are arranged in a zigzag shape. It is not limited to such an arrangement, and the point 55 may of course be arranged between the adjacent dot rows 55A and in the second direction W on a parallel straight line.

In addition, the dot 55 is provided not only over the entire skin facing surface of the upper covering sheet 50, but also at least one of the first direction L and the second direction W, and is provided only on the skin facing surface of the upper covering sheet 50. a part of.

The color of the dot 55 can be appropriately selected in consideration of its visibility. Specifically, all of the primary colors such as white, black, red, blue, purple, orange, yellow, green, and blue, and the light colors or the mixed colors of the colors may be selected. Here, when the ground color other than white is added to the upper cover sheet 50, the color of the dot 55 constituting the coloring portion is the same color as the ground color of the upper covering sheet 50, and a color richer than the ground color is preferable. As a result, the forward color (bright) is displayed in the non-colored portion of the unprinted dot 55, and the faded color (dark) is expressed at the dot 55 of the colored portion.

Referring back to the description of Fig. 3, the upper cover sheet 50 is covered by the top sheet 40 on the skin contact surface side.

The top sheet 40 is a hot air type white nonwoven fabric. The top sheet 40 has a fiber alignment parallel to the first direction L and has a predetermined range of average absorbance and texture index. In the present embodiment, the average absorbance of the top sheet 40 is in the range of 275 or more and 1694 or less, and the texture index is in the range of 180 or more and 557 or less. The top sheet 40 is not limited to the case where the entire surface has an average absorbance and a texture index in the above range, and may be an average absorbance having only a part of the above range. The total sheet weight of the top sheet 40 is less than 60 gsm, preferably in the range of 18 gsm to 44 gsm. The top sheet 40 is not limited to the hot air non-woven fabric, and may be composed of various non-woven fabrics such as point bonding, spunbonding, and SMS (spun bonding, melt blowing, spunbonding). In addition, the color of the nonwoven fabric constituting the top sheet 40 is not limited to white, and may be appropriately selected in consideration of the visibility of the coloring portion 55 of the upper covering sheet 50.

In this manner, the mass shown in FIG. 3 is formed on the texture of the top sheet 40 so that the texture index of the top sheet 40 is set in the range of 180 to 557. Figure 3 shows the high absorbance region 40A and the low absorbance region 40B formed in the top sheet 40 by additional texture agglomerates. The high absorbance region 40A is a region which is determined as a result of binarization processing in which the average absorbance of the entire top sheet 40 is a critical value, and is determined to have an absorbance higher than a critical value, and is shown by hatching in FIG. 3 . In contrast, the low absorbance region 40B is determined as a region having the absorbance lower than the critical value as a result of the above-described binarization processing. As shown in FIG. 3, the dot 55 of the upper cover sheet 50 is recognized from the skin facing side of the disposable disposable diaper 10 by both the high absorbance region 40A and the low absorbance region 40B of the top sheet 40.

Here, a method of measuring the average absorbance and the texture index will be described.

The average absorbance and texture index of the top sheet 40 were measured using a Formation Tester (FMT-MIII) available from Nomura Corporation. A non-woven fabric sample of A4 size (29.7 cm in length × 21.0 cm in width) was placed on the sample stage, and a transmission image when the sample was irradiated with the light of the irradiation lamp was taken by a secondary CCD camera. Further, the captured image is decomposed into an appropriate pixel number (for example, 320 × 320 pixels), and the intensity of light received by each pixel is measured, and the absolute transmission of light is calculated for each pixel according to the following formula (1). Rate t (%). Here, the absolute transmittance refers to the transmittance of light per pixel when the sample itself transmits light, and the average absorbance refers to the average of the absorbance obtained in the sample of the A4 size. value.

Absolute transmittance t=(Vt-Vr)/(V100-V0)×100%...(1)

Here, the variables shown in the above formula (1) are each as follows.

V100: luminosity of the illumination lamp

V0: luminosity of the illumination lamp off

Vt: luminosity of the illumination lamp when the sample is placed

Vr: luminosity of the illumination lamp when the sample is placed

In addition, the absolute transmittance t is converted into the absorbance E according to the following formula (2), and the texture index is calculated from the obtained absorbance E according to the following formulas (3) and (4).

Absorbance E=2-log t...(2)

Texture index = coefficient of variation of absorbance E × 10...(3)

Coefficient of variation = standard deviation of absorbance E / average absorbance × 100%... (4)

According to this embodiment, the following effects can be obtained.

In the present embodiment, the top sheet 40 is made of a non-woven fabric, and the texture of the top sheet 40 is set to a range of 180 to 557, and an appropriate agglomerate is added to the texture of the top sheet 40. The skin-facing side of the disposable diaper 10 is shaded by a point 55 visible on the top sheet 40, and the faint effect is created by the shadow of the hole, and the point 55 not only serves as a pattern or a color, but also produces a look. It looks like a hole.

Further, the point 55 is formed like a shadow of the fiber so that the dot 55 is formed in a shape in which the first direction L of the fiber in the top sheet 40 is aligned, and the upper cover sheet 50 is shaded. Lift point 55 looks like a hole-like effect. Here, the direction in which the dot row 55A extends is matched with the first direction L along which the fibers in the top sheet 40 are aligned, so that the plurality of dots 55 constituting the row 55A become the shadow of the fibers of the top sheet 40. Partially formed well. According to this, the lifting point 55 looks like a hole-like effect, and the impression that the disposable disposable diaper 10 has a hole is further improved.

As described above, according to the present embodiment, the impression of the disposable disposable diaper 10 having the hole which is not actually present is given to the user, and the user can be given the impression that the disposable disposable diaper 10 has high absorption performance. .

Here, the visibility of the plurality of dots 55 constituting the colored portion of the upper cover sheet 50 on the skin facing surface side is ensured so that the average absorbance of the top sheet 40 is in the range of 275 to 1694. In the case where the absorbance is lower than 275, the top sheet 40 is excessively light-transmitted, and the dots 55 are like an impression of only a pattern or a flower color. On the other hand, in the case where the absorbance is higher than 1694, the shielding property of the top sheet 40 is increased, and there is a possibility that the point 55 is not easily seen from the opposite side of the skin of the disposable disposable diaper 10.

Further, by arranging the dots 55 in a zigzag manner between the plurality of dot rows 55A, the holes can be seen to be scattered, and the impression that the disposable disposable diaper 10 has holes can be further improved.

Here, the interval G2 of the point 55 adjacent to the second direction W is constant, and the point 55 is moderately dense so as to be set in the range of 0.75 mm to 3.5 mm, and the entire identification of the top sheet 40 can be appropriately ensured. The frequency of occurrence of point 55. According to this, even in a region where the absorbance is high (for example, the high absorbance region 40A), the dot 55 can be formed on the opposite side of the skin through the top sheet 40, and the top sheet is interposed between the colored portion and the non-colored portion other than the colored portion. 40 Moderately maintaining the contrast, the impression of the presence of the hole in the disposable disposable diaper 10 can be further improved. Here, from the viewpoint of ensuring the frequency of occurrence of the dots 55, the interval G1 of the dots 55 adjacent to the first direction L is preferably set in the range of 0.5 mm to 10 mm.

In the upper cover sheet 50, the color difference between the colored portion and the non-colored portion other than the colored portion is preferably in the range of 3.2 to 13 in the range of 3.2 to 13, and the chromatic aberration in this range is set so as to pass through the top sheet 40. The contrast between the visible colored portion and the non-colored portion is further improved, so that it is easy to recognize the point 55 from the opposite side of the skin.

In addition, the width B of the dot 55 is narrowed with respect to the non-colored portion so that the dimension (width) of the dot 55 in the second direction W is smaller than the interval of the dot row 55A, and the depth of the hole generated by the point 55 is emphasized. Impression, so that the impression that the disposable disposable diaper 10 has a hole can be further improved.

Further, the point 55 can be appropriately set with respect to the first direction L along which the fibers in the top sheet 40 are aligned so that the ratio A/B of the length A and the width B of the dot 55 is set in the range of 1 to 18.5. It is a long shape and is set to an appropriate size in order to look like a hole.

Figure 5 is an illustration of the effects obtained by the present embodiment. In the figure, the appearance of the point 55 when different nonwoven fabrics are used as the top sheet 40 has been compared. A to N indicate sampling of the non-woven fabric used in the evaluation, specifically, the following.

A: Hot air non-woven fabric (weight per unit area 18gsm)

B: hot air non-woven fabric (weight per unit area 25gsm)

C: uneven hot air non-woven fabric (weight per unit area 25gsm)

D: uneven hot air non-woven fabric (weight per unit area 27gsm)

E: uneven hot air non-woven fabric (weight per unit area 25gsm)

F: hot air non-woven fabric (weight per unit area 40gsm)

G: spunbonded non-woven fabric (weight: 13gsm per unit area)

H: embossed non-woven fabric (weight per unit area 18gsm)

I: Spunbonded non-woven fabric (weight: 30gsm per unit area)

J: spunbonded non-woven fabric (weight per unit area 60gsm)

K: sticky non-woven fabric (weight: 23gsm per unit area)

L: SMS non-woven fabric (weight per unit area 10gsm)

M: SMS non-woven fabric (weight per unit area 35gsm)

N: hot air non-woven fabric (weight per unit area 44gsm)

Here, both of the samples C and E are irregular hot air non-woven fabrics, but the samples C are formed into irregularities by the air jet method, and the sample E is formed into irregularities by mechanical secondary processing (gear processing). According to the air jet method, a difference in basis weight is generated between the portion corresponding to the convex portion so that the fiber corresponding to the concave portion is blown by the air current. The sampling D is also formed by the air jet method in the same manner as the sampling C, but The fiber diameter and fiber type of sample C are different, and the interval of blowing air is also different. Further sampling of I and J is not only different in basis weight, but also in fiber types.

Nos. 1 to 32 indicate the upper cover sheets 50 used for evaluation, and the lengths A and B of the dots 55 and the intervals G1 and G2 between the points 55 are changed between the sheets of different numbers.

For 10 (N=10) adults, the samples A to N were placed on the upper cover sheet 50, and when the samples A to N were observed from the opposite side of the skin, the evaluation was performed in three stages (○, △, and ×). The verification point 55 is recognized as the degree of the hole. "○" indicates that the number of subjects (Np) that has been positively judged as a hole-like impression has reached a majority (5 < Np), and "△" indicates that the number of subjects has not reached more than half (Np≦ 5). "X" indicates that in the evaluation of "△", in particular, there is no case where the subject who has made the above judgment (Np = 0).

As shown in Fig. 5, sampling outside J and M was well evaluated. The average absorbance is preferably in the range of 275 to 1694, and the texture index is preferably in the range of 180 to 557. It is preferred that the top sheet has a basis weight of less than 60 gsm. When the weight per unit area of the top sheet is 60 gsm or more, the colored portion is not easily recognized through the top sheet, and the visual effect of the colored portion as a hole is not easily exhibited.

Further, the average absorbance, the texture index, and the basis weight are all compared with the samples A to D, F~I, K, and L in the above range, and the length A of the point 55 and the interval G1 of the first direction L are respectively fixed. At 1 mm (numbers 1 to 14), the width B is in the range of 0.1 mm to 0.7 mm, and the interval G2 in the second direction is in the range of 0.75 mm to 3.5 mm. In the case, a good evaluation of ○ or Δ was obtained.

In addition, when the width B of the dot 55 is 0.35 mm, the interval G2 of the second direction W is 1 mm (numbers 15 to 32), and the length A is in the range of 0.5 mm to 1.75 mm, and the first direction L When the interval G1 was in the range of 0.5 mm to 10 mm, a good evaluation of ○ was obtained.

Fig. 6 is a plan view showing the disposable disposable diaper 10' for use in a modified example of the object to which the colored portion is attached.

In the above description, the sheet member which is different from the lower covering sheet 35 surrounding the absorber 30 is provided with a colored portion in the upper covering sheet 50 disposed between the absorber 30 and the top sheet 40.

The coloring portion may be provided on both the upper covering sheet 50 and the lower covering sheet 35, or may be provided only in the lower covering sheet 35 without being provided on the upper covering sheet 50. In the former example, the upper cover sheet 50 and the lower cover sheet 35 constitute a "second skin sheet", and the user can be given an impression that a hole is present throughout the skin facing surface of the absorber 30. On the other hand, in the latter case, the lower cover sheet 35 constitutes the "second skin sheet", and the impression that the hole is biased in the vicinity of the side edge of the absorber 30 can be emphasized. In any of the examples, the method of setting the coloring portion can be performed by printing.

Further, in the example shown in Fig. 6, the entire system of the absorbent body 30 is surrounded by one covered sheet 35', and a colored portion is provided in a portion of the covered sheet 35' that is in contact with the skin facing surface of the absorbent body 30. In the modified example, the cover sheet 35' constitutes a "second skin sheet".

In the above description, at least one of the upper cover sheet 50 and the lower cover sheet 35 surrounding the absorber 30 is provided with a colored portion. The coloring portion may be provided in a so-called second sheet disposed between the top sheet 40 and the absorber 30 for the purpose of improving the moving speed of the excrement to the absorber 30 and suppressing the backing. In this case, the second sheet constitutes the "second skin sheet".

Fig. 7 is a schematic schematic view showing a modified example of the configuration of the colored portion.

In the example shown in Fig. 7 (a), the center portion of the upper cover sheet 50 in the center and the vicinity of the second direction W, and the portions on both sides of the center portion (hereinafter referred to as "side portion") Between the two, the density of the dots 55 is different; at the central portion, the distance G21 between the points 551 in the second direction W is narrower than the interval G22 in the side portions. According to this, it is possible to emphasize the impression that there are more holes in the center portion near the urination position.

The same effect can be obtained by changing the length A or the width B of the point 55.

In the example shown in the same figure (b), in the central portion of the upper covering sheet 50, the length A1 of the dot 551 is shorter than the length A2 of the side portion.

In the example shown in the same figure (c), in the central portion of the upper covering sheet 50, the width B1 of the dot 551 is larger than the width B2 of the side portion.

In the above description, the disposable disposable diapers 10, 10' are used as the absorbent article. The absorbent article is not limited to the disposable disposable diaper, and may be an anti-overflow breast pad or a sanitary napkin.

Fig. 8 is a plan view showing a breast milk pad 100 which is an absorbent article according to another embodiment of the present invention. Figure 9 is Figure 8 The BB line profile of the anti-overflow breast pad 100 is shown. As shown in FIG. 9, the anti-overflow breast pad 100 is provided with the absorber 130, and the absorber 130 is covered by the two sheets (the upper cover sheet 151 and the lower cover sheet 152) which have liquid absorption. In the present embodiment, the two covered sheets 151 and 152 constitute a "second skin sheet".

In the plan view of FIG. 8, the upper cover sheet 151 has a size substantially the same as that of the absorber 130, and is disposed on the skin facing surface of the absorber 130. The lower covering sheet 152 covers the non-skin opposing surface of the absorber 130, that is, the bottom surface and the two side edges extending in the first direction L. The both end edges are arranged to be bent inward and to the side edge portion of the upper covering sheet 151. overlapping. In addition, a non-woven fabric 140 constituting the "first skin surface sheet" is disposed on the skin facing surface side of the upper covering sheet 151. The nonwoven fabric 140 forms a contact surface with respect to the wearer.

Here, the upper cover sheet 151 and the lower cover sheet 152 are provided with a colored portion throughout them, and the colored portion is formed of dots, and the dots are 151 and 152 in any of the coated sheets 151 and 152, and the fibers are aligned along the non-woven fabric 140. The one direction L has a long shape and is arranged to constitute a dot array connected in the first direction L.

Therefore, in the present embodiment, the upper and lower dots overlap each other in the portion where the two covered sheets 151 and 152 overlap, and the superimposed dots are more likely to pass through the nonwoven fabric 140 than the portion in which only the upper covering sheet 151 is disposed. Thick shadows. According to this, the region X near the side edge of the absorber 130 in which the upper covering sheet 151 and the lower covering sheet 152 overlap each other (Fig. 8) and the area Z in the center where only the upper covering sheet 151 is disposed, the impression of the depth received by the user is different, and the impression that the absorption performance in the region X near the side edge of the absorber 130 is higher can be emphasized.

In the step of providing the colored portion in the lower covering sheet 152, a blank portion that does not perform printing is provided on the side edge portion of the lower covering sheet 152, and the anti-overflow breast pad 100 shown in Fig. 8 is The region Y between the region X in the vicinity of the side edge in the second direction W and the region Y between the central regions Z can be such that only the upper cover sheet 151 is disposed so that the point of the upper cover sheet 151 and the blank portion of the lower cover sheet 152 overlap each other. Further light-colored dots in the central zone Z. According to this, the impression about the absorption performance given to the user can be adjusted stepwise.

Next, the absorbent articles according to Modifications 1 to 3 will be described. In the following description, the same configurations as those of the above-described embodiments are denoted by the same reference numerals and will not be described. The configuration of the coloring portion of the absorbent article according to Modifications 1 to 3 is different from that of the embodiment. Further, the configuration of the colored portion of the absorbent article according to the first modification is the same throughout the entire second skin sheet. The configuration of the colored portion in the central portion of the absorbent article according to the second modification and the third modification is different from the configuration of the colored portion on the side. Table 1 shows the configuration of the first skin sheet and the configuration of the second skin sheet of the absorbent articles of Modifications 1 to 3.

According to the absorbent articles having the colored portions of Modifications 1 to 3, it is possible to give the user an impression that the absorbent article has a hole that does not actually exist.

According to the above-described embodiments and modifications, the coloring portion of the invention of the present application is preferably configured as follows.

‧ Length of the first direction of the colored portion (A): 0.5 mm or more and 1.85 mm or less

‧ Length of the colored portion in the second direction (B): 0.1 mm or more and 0.7 mm or less

‧The distance between the colored portions adjacent to the first direction (G1): 0.5 mm or more and 10 mm or less

‧The distance between the colored portions adjacent to the second direction (G2): 0.75 mm or more and 3.5 mm or less

‧A and B relationship: A>B

‧G2 and G1 relationship: G2<G1, G2>G1 and G1=G2

‧G2 and B relationship: G2>B

In particular, the length (A) of the colored portion in the first direction is: 0.5 mm When the length (B) in the second direction of the colored portion is 0.1 mm or more and 0.7 mm or less, it is possible to give an impression that the colored portion image is opened. Further, it is more preferable that the distance between the colored portions adjacent to the first direction (G1) is 0.5 mm or more and 10 mm or less, and the distance between the colored portions adjacent to the second direction (G2) is 0.75 mm or more and 3.5 mm or less. By this, it is possible to give the colored portion an impression like an opening.

In the above embodiment, the first direction is the longitudinal direction and the second direction is the width direction. However, the absorbent article of the present invention includes an embodiment in which the first direction is the width direction and the second direction is the longitudinal direction. In the embodiment in which the first direction is the width direction and the second direction is the long side direction, the direction of the fibers in the first skin surface sheet is the width direction.

As described above, the content of the present invention has been disclosed by the embodiments of the present invention, and the description and drawings which constitute a part of the present disclosure are not to be construed as limiting the invention. Various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art from this disclosure. Therefore, based on the above description, the technical scope of the present invention is established only in accordance with the specific matters of the invention within the scope of the proper patent application.

In addition, the entire content of the Japanese Patent Application No. 2015-254246, filed on Dec. 25, 2015, and the entire contents of In the manual.

[Industrial Applicability]

By the visual effect of the skin facing surface of the absorbent article, it is possible to provide an absorbent article in which the wearer can grasp the absorption performance of the absorbent article.

40‧‧‧Top sheet (first skin sheet)

40A‧‧‧High absorbance area

40B‧‧‧Low absorbance area

55‧‧‧ points (coloring department)

L‧‧‧1st direction

W‧‧‧2nd direction

Claims (6)

An absorbent article comprising: an absorbent body, a first skin surface sheet which is disposed on the skin facing surface side of the absorbent body and which is formed of a non-woven fabric, and a second skin disposed between the absorbent body and the first skin surface sheet The surface sheet has a first direction orthogonal to the fibers in the first skin surface sheet and a second direction orthogonal to the first direction, and the first skin sheet has a texture index ranging from 180 to 557. In the region, the second skin surface sheet has a long colored portion including a plurality of dots in the first direction, and the colored portion passes through the region of the first skin surface sheet and faces the skin opposite side of the absorbent article. It is identifiable that the length of the colored portion in the first direction is 0.5 mm or more and 1.85 mm or less, and the length of the colored portion in the second direction is 0.1 mm or more and 0.7 mm or less, and the colored portions adjacent to the first direction are mutually The interval is 0.5 mm or more and 10 mm or less, and the interval between the colored portions adjacent to the second direction is 0.75 mm or more and 3.5 mm or less. The absorbent article of claim 1, wherein the first skin is The aforementioned area of the face sheet has an average absorbance in the range of 275 to 1694. The absorbent article according to claim 1 or 2, wherein the colored portion includes a plurality of dot rows in which the dots are arranged in the first direction, and the dot rows are arranged apart from each other in the second direction. The absorbent article according to claim 3, wherein the colored portion is between a plurality of dot rows, and the dots adjacent in the second direction are arranged to be offset from each other in the first direction. The absorbent article according to any one of claims 1 to 4, wherein the colored portion has a smaller dimension along the second direction than the adjacent dot array. The absorbent article according to any one of claims 1 to 4, wherein, in the colored portion, the size of the point in the first direction is A, and the size of the point in the second direction is B. The ratio of A/B is in the range of 1 to 18.5.